Toro's Oscillating Nozzle creates air movement without moving parts! The nozzle automatically sweeps the air back and forth providing a wider clearing power on hard surfaces, saving time and reducing wrist movement. http://toro.com/yardtools
Fits these Toro Electric Blower/Vacs: Models 51574, 51591, 51599, 51602, 51609, 51617, 51618, and 51619. Comes standard on the 51621.